Are you ready? Here's a quick lesson in African American social history. For more than a century, the East Coast black elite, including prominent artists, intellectuals and financially secure professionals, has gathered on the island of Martha's Vineyard, off the coast of Massachusetts, to relax and spend time with one another. By tradition, other ethnic groups do the same, and while the groups mingle socially, they largely live in segregated communities on the island. The black community has always summered near the town of Oak Bluffs, on the Island's northern coast. virtualtourist.comDock at Oak Bluffs, Martha's Vineyard The idea that...